I’ve heard that Botox can be used to weaken the jaw and make it appear less broad.

Question:
I’m a woman with a very broad jaw. I’ve heard that Botox can be used to weaken the jaw and make it appear less broad. How effective is this?

Answer:
The results are variable but often works. The Botox relaxes the masseter muscle, the large, strong muscle that opens and closes your mouth. If it gets into the facial nerve it could cause some loss of function in other muscles, but this is rare.